8
Figure 8
Plan the installation
continued from preceding page
This will create a gap between the bracket and the
pulley wheel. If the cable should enter this gap it
will lock in place, which will cause non-warranty
damage to the towed vehicle’s brakes and tires as
well as other, consequential damage.
Note: if there is no flat surface to mount the pulley
due to curves, recesses or obstructions in the firewall,
an optional pulley mounting bracket (Figure 7) is avail-
able from ROADMASTER.
•
The pulley will be attached with four 5/16" self-
tapping screws. Make certain that the screws will not
damage any components or electronics on the other
side of the firewall.
Do not attach the pulley or brake pedal clamp
now.
Choose a mounting location for the cable
anchor bracket and cable assembly
Based on where you will attach the pulley and brake
pedal clamp, find the mounting location for the cable
anchor bracket (Figure 1). This point must…
•
…position the cable directly in line with the pulley.
•
…take up all of the slack in the cable without de-
pressing the brake pedal.
•
…allow the cable housing and air cylinder to be
out of the way and hidden. A typical route is along the
driver’s side kick panel and underneath the door trim,
paneling or carpeting — try to position the air cylinder
under the driver’s seat. However, the cylinder can be
located under the passenger’s seat, the center console
or the dashboard. Or, depending on the interior design
of the vehicle, there may be a more suitable location.
Make certain that the route you choose, as well as
the mounting location for the cable anchor bracket,
will cause no more than a three-inch, 90-degree bend.
Refer to Figure 8.
CAUTION
Do not bend the cable housing further than a
three-inch, 90-degree bend. Otherwise, InvisiBrake
will not release braking pressure after it is acti-
vated, which will cause significant non-warranty
damage to the towed vehicle's brakes and tires.
Other consequential, non-warranty damage may
also occur.
Choose a path for the cable
Choose a route for the cable with as few curves as
possible. The more curves there are, and the tighter
the bends are, the more you will have to increase the
air pressure to receive adequate braking.
Figure 7
